Winch-head.



No. 652,798. Patented July 3, I900.

S. MATTSDN.

wmc-n -H EAD. (Applicatiun filed Mar. 23, 1898. Renewed June 8, 1899.)(No ModeL: 2 Sheets- Sheet .l.

No. 652,798. Patented July 3,1900;

s. MATTSON. WINCH HEAD. pppp lication filed M8 23, 189B. Renewed June 3,1899 UNITED STATES PATENT OFFICE.

SAMUEL MATTSON, OF NE\V YORK, N. Y., ASSIGNOR TO THE LIDGERWOODMANUFACTURING COMPANY, OF NEW YORK.

WINCH-HEAD SPECIFICATION forming part of Letters Patent No. 652,798,dated July 3, 1900. Application filed March 23,1898. Renewed June 3,1899. Serial No. 7193,04. (N0 modelJ' To all whom it may concern:

Be it known that I, SAMUEL MATTSON, of New York, (Brooklyn,) in thecounty of Kings and State of New York, have invented certain new anduseful I mprovementsin \Vinch- Heads; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention contemplates certain new and useful improvements inwinch-heads for hoisting-engines, and is especially applicable when suchengines are used on boats in'the prosecution of the building ofbridge-piers, caisson-work, and the like. In this class of work thehoisting-derrick is provided with an approximately horizontally disposedarm,

commonly called a boom, which is constantly swungin the operation of thederrick from side to side by the turning of the mast by which it issupported. It frequently happens, especially in rough water, that greatdifficulty is experienced in controlling the boom, which under its ownor increased weight will move farther than desired, the rocking of theboat preventing the mast from maintaining a truly-perpendic-ularposition. The turning of the mast and boom is ordinarily effected by arope or chain passed around a bull-wheel keyed on the mast and connectedat its ends to suitable machinery independent of the hoisting apparatus.By my invention this rope is connected at its ends to two winch-heads,commonly called niggerheads, mounted directly on the shafts of thehoisting-drums. Theseheadsaresoarranged that as one is tightened,"so asto be operated by the revolution of the drum-shaft, the other head willbe loose and free to turn independent of its shaft. Hence as thebull-wheel rope is being wound on one head it is unwound from the other.This I accomplish by making each of the heads in sections, that partwhich is capable of being revolved independent of the shaft being theone on which the rope is wound. The other part or parts are made torevolve with the shaft. A suitable clutch is provided for each head, andthese clutches are so connected that as one of them throws the parts ofone winch-head into fric- A ena.

elevation of one of the latter.

tional contact with one another, causing all I to revolve in unison, theother head will be loosened, so that the part or section thereof towhich the rope is attached can unwind the latter independent of anymovement of the shaft upon which it is mounted.

The invention will be hereinafter fully set forth, and particularlypointed out in the claims;

In the accompanying drawings, Figure 1 is a view showing the generaloutline of a hoisting apparatus and derrick. Fig. 2 is an enlarged viewof part of the hoisting apparatus,

showing more clearly my improvements. Fig.

3 is an enlarged vertical sectional View taken through one of thewinch-heads. Fig. at is an Fig. 5 shows one of the clutches.

Referring to the drawings, A designates a hoisting apparatus; a, a mast;ct, a boom extending from said mast, and a a bull-wheel keyed on mast a.

The hoisting apparatus A is provided with two drums b b, which may beoperated in any suitable manner in accordance with wellknown forms ofconstruction. Hence further reference to the construction of thisapparatus is unnecessary, save so far as to make clear the features ofmy invention. On the extended end of the shaft B of each drum is placeda winch-head O. To these winch-heads are connected the ends of a rope W,which is passed around the bullwheel a and by which the mast a iscapable of being rotated. Each winch-head consists of a central part orsection D andtwo end parts or sections at d. The former, D, has anannular concavity to accommodate the rope W and is normally loose, Whilethe parts or sections at d are in- This section isheld firmly on shaft Bby annular V-shaped groove e, designed to conform with and accommodatean annular V- shaped rib e, formed on the outer side of the central partor section D. The part or section d consists of a central hub or sleeve6 and a circular flange e the latter being formed near its peripherywith an annular V-shaped rib 6 which is designed to project into andsnugly fit a corresponding groove e in the adjoining face or end ofsection D. The end of hub or sleeve 6 is also provided with oppositecut-aways e, which accommodate the extensions d of the sleeve of sectiond. This latter section being fast to shaft D and its sleeve being inengagement with the sleeve of the part (Z, both are caused to revolve inunison with said shaft. The cut-away portions in the sleeves d and c areof such depth as to permit the section (Z to have a limited slidingmovement on shaft B without being disengaged from the sleeve of thesection (1. On the shaft 1-3 of each of the drums of the hoistingapparatus is placed a clutch E, the same consisting of two collars ff,the former being stationary and the latter loose, both having concentricopenings to accommodate shaft B. The inner opposed faces of thesecollars have cam-like inclinations, whereby by moving the collar f, sothat the opposed faces of the two collars will force it outward againstthe adjoining face of the section dof the winch-head, said section willbe moved so as to bind in frictional contact the three sections of thehead. It will be understood that the inclinations of the collars of oneclutch are the reverse of those of the collars of the otherclutch. Fromeach of the collars f projects an arm f These arms of the two clutchesare connected together by a bar f and with the center of the latterengages an operating-lever F. The clutches are so arranged that when oneof them forces the parts or sections of the adjoining winch-head intofrictional engagement with one another the other clutch will release thesections of the other winch-head, thereby allowing the rope or centralsection D to rotate independently of the shaft B, as well as of theother parts or sections of the head.

From what has been said it will be seen that by means of my inventionthe mast of a derrick can be readilyand easily turned and the boomcarried thereby may be held at any desired point.

While I have specified the winch-heads as being so constructed andarranged that as one is having the rope wound thereon the rope is beingunwound from the other, yet by so moving the operating-lever and holdingit at an intermediate point both winch-heads may be so loosened as notto cause the rope-sections to rotate with their respective shafts.

I claim as my invention- 1. The combination with a hoisting apparatushaving two drums, of a winch-head on the shaft of each of said drums,means for throwing each of said winch-heads into and out of gear withits respective shaft, and connections between said means, whereby as onewinch-head is thrown into gear, the other is thrown out of gear,substantially as set forth.

2. The combination with a hoisting apparatus having two drums, of awinch-head mounted on the shaft of each drum, each of said winch-headsbeing composed of sections, one of which is fast to its shaft, a movablerotary collar on each shaft designed to bind said sections together, andconnections between said collars, whereby they will be operatedtogether, substantially as set forth.

3. The combination with the shaft of a hoisting apparatus, of awinch-head consisting of two end sections having elongated hubsconnected together so that one of said sections may be movedlongitudinally on said shaft, the other end seetiorr and its hub beingfast to said shaft, an intermediate section interposed between said endsections, and means for binding said sections together, substantially asset forth.

4. The combination with the shaft of a hoisting apparatus, of awinch-head consisting of an outer part or section having a circularflange and a hub or sleeve fast on said shaft and formed with cut-awayportions, an inner part or section having a circular flange and a hub orsleeve having extensions designed to fit in said cut-away portions ofsaid former sleeve, and a central section fitted on said sleeves andhaving an an n ular concavity, the opposed faces of said parts orsections having interlocking grooves and projecting portions, and meansfor bindingsaid parts or sections together, substantially as set forth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

SAMUEL MATTSON.

Vitnesses:

FRANK H. PHILLIPS, EDWARD GRoTEcLoss.

